Cathode Electrolyte Diagnostics Based on Scanning Probe Microscopy

Di Huang, Chaiwat Engtrakul, Sanjini Nanayakkara, Bobby To, Rong He, Meng Zhou, Hongmei Luo, Robert Tenent

Research output: Contribution to conferencePaperpeer-review

1 Scopus Citations


Various processes lead to degradation of cathodes in lithium-ion batteries. Questions remain regarding mechanisms of many of these processes. Probe microscopy methods including scanning electrochemical microscopy (SECM) are capable of directly probing processes at the cathode/electrolyte interface. SECM uses a small electrode to perform rapid electrochemical analysis of transient species generated at an active cathode/electrolyte interface. This paper discusses the background of the SECM instrument and its application to lithium-ion battery research. We also describe the application of SECM methods to the study of cathode degradation processes observed in lithium-ion batteries. Specifically, we focus on characterizing the dissolution of manganese from LiMn2O4 (LMO) based on recent debate in the literature. We describe experiments to observe and characterize the electrochemical properties of manganese complexes emerging from degrading LMO electrode materials.

Original languageAmerican English
Number of pages8
StatePublished - 2020
EventEnergy Harvesting and Storage: Materials, Devices, and Applications X 2020 - None, United States
Duration: 27 Apr 20208 May 2020


ConferenceEnergy Harvesting and Storage: Materials, Devices, and Applications X 2020
Country/TerritoryUnited States

Bibliographical note

Publisher Copyright:
© 2020 SPIE.

NREL Publication Number

  • NREL/CP-5K00-76821


  • Cathode/Electrolyte Interface
  • Scanning Electrochemical Microscopy
  • Scanning Probe Microscopy


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